Index: gui.h
===================================================================
--- gui.h	(revision 371)
+++ gui.h	(revision 372)
@@ -146,8 +146,9 @@
 __global raydium_gui_Window raydium_gui_windows[RAYDIUM_GUI_MAX_WINDOWS];
 __global signed char        raydium_gui_visible;
 __global int                raydium_gui_window_focused;
-__global signed char	   raydium_gui_oldstate;
-__global GLfloat		   raydium_gui_widget_sizes_default[3];
-__global int		   raydium_gui_button_clicked_id;
+__global signed char	    raydium_gui_oldstate;
+__global GLfloat	    raydium_gui_widget_sizes_default[3];
+__global int		    raydium_gui_button_clicked_id;
+__global void *		    raydium_gui_AfterGuiDrawCallback;
 
 #endif